Exam 1: Emissions and Engine Performance Overview

The ASM 25/25 test is an enhanced inspection and maintenance program performed in lieu of the full I/M240 test.

The EPA regulates eight principal pollutants.

What are the two enhanced inspection and maintenance programs performed in lieu of the full I/M240 test?

If the fuel filler cap leaks, what emissions gas will be allowed to enter the atmosphere?

What federal agency has required that an inspection and maintenance (I/M) program be implemented for areas of the country that are considered non-attainment zones?

Technician A says in 1996 the EPA mandated the use of OBD testing as a replacement for tailpipe and dynamometer testing of emissions. Technician B says in 2001 the EPA ruled that OBD testing be performed in lieu of testing tailpipe emissions on vehicles produced beginning in 1996. Who is correct?

What is particulate matter, and what other names are used to describe it?

Of the six major pollutants tracked by the EPA, which has had the least progress made on reducing ground level amounts?

Technician A says under ideal combustion, all the nitrogen entering the combustion chamber will leave the combustion chamber unchanged. Technician B says under ideal combustion, all the oxygen and all the hydrocarbons are chemically recombined to produce carbon dioxide and water. Who is correct?

What are the negative consequences of CO₂ emissions from an internal combustion engine?

What is the term for the point (having an air-fuel ratio range of 0.9 to 1.1) at which the fuel mixture burns the most efficiently?

Volatile organic compounds are biodegradable and will not harm the environment.

The EPA regulates what six major pollutants?

Technician A says FTP is a test that measures emissions of HCs and CO₂. Technician B says EPA is a federal agency in charge of writing and implementing policies related to environmental protection. Who is correct?

The I/M240 test evolved from what federal test procedure?

The I/M240 testing readings of HC, CO, and NO_X are provided in grams per mile.

Technician A says that nitrogen can combine in the combustion chamber with oxygen to form nitrogen oxides, a regulated air pollutant. Technician B says that nitrogen makes up 78 percent of the air that we breathe every day. Who is correct?

What are volatile organic compounds, and how are they emitted from a motor vehicle?

How are the emission levels recorded during the I/M240 test?

Technician A says one of the six principal air pollutants regulated by the EPA is nitrogen. Technician B says carbon dioxide contributes to global warming. Who is correct?